Movable mounting arm



FIG. 1 is a bottom perspective view of a movable mounting arm showingour new design. The movable mounting arm is shown with a monitor (inbroken lines) in an open position;

FIG. 2 is a front view thereof;

FIG. 3 is a rear view thereof; and

FIG. 4 is a left side view thereof;

FIG. 5 is a right side view thereof;

FIG. 6 is a top plan view thereof;

FIG. 7 is a bottom plan view thereof; and,

FIG. 8 is another bottom perspective view thereof, with the monitor in aclosed position.

The broken lines in the figures show portions of the movable mountingarm which form no part of the claimed design.

The ornamental design for a movable mounting arm, as shown anddescribed.